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LTC2654CUF-H12PBF Datasheet(PDF) 5 Page - Linear Technology |
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LTC2654CUF-H12PBF Datasheet(HTML) 5 Page - Linear Technology |
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5 / 24 page  LTC2654 5 2654f ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VCC = 2.7V to 5.5V, VOUT unloaded unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VOUT DAC Output Span Internal Reference External Reference = VEXTREF 0 to 2.5 0 to 2•VEXTREF V V PSR Power Supply Rejection VCC ±10% –80 dB ROUT DC Output Impedance VCC = 5V ±10%, Internal Reference, Mid-Scale, –15mA ≤ IOUT ≤ 15mA VCC = 3V ±10%, Internal Reference, Mid-Scale, –7.5mA ≤ IOUT ≤ 7.5mA l l 0.04 0.04 0.15 0.15 Ω Ω DC Crosstalk Due to Full-Scale Output Change (Note 5) Due to Load Current Change (Note 5) Due to Powering Down (per Channel) (Note 5) ±1.5 ±2 ±1 μV μV/mA μV ISC Short-Circuit Output Current VCC = 5.5V VEXTREF = 2.8V (Note 6) Code: Zero-Scale; Forcing Output to VCC (Note 6) Code: Full-Scale; Forcing Output to GND (Note 6) l l 20 20 65 65 mA mA VCC = 2.7V VEXTREF = 1.4V Code: Zero-Scale; Forcing Output to VCC Code: Full-Scale; Forcing Output to GND l l 10 10 45 45 mA mA LTC2654B-L16/ LTC2654-L12 (Internal Reference = 1.25V) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Reference Reference Output Voltage 1.248 1.25 1.252 V Reference Temperature Coefficient (Note 7) ±2 ±10 ppm/°C Reference Line Regulation VCC ±10% –80 dB Reference Short-Circuit Current VCC = 5.5V, Forcing Output to GND l 35 mA Refcomp Pin Short-Circuit Current VCC = 5.5V, Forcing Output to GND l 60 200 μA Reference Load Regulation VCC = 3V ±10% or 5V ±10%, IOUT = 100μA Sourcing 40 mV/mA Reference Output Voltage Noise Density CREFCOMP = CREFIN/OUT = 0.1μF, at f = 1kHz 30 nV/√Hz Reference Input Range External Reference Mode (Note 13) l 0.5 VCC/2 V Reference Input Current l 0.001 1 μA Reference Input Capacitance (Note 9) l 20 pF Power Supply VCC Positive Supply Voltage For Specified Performance l 2.7 5.5 V ICC Supply Current VCC = 5V, Internal Reference On (Note 8) VCC = 5V, Internal Reference Off (Note 8) VCC = 3V, Internal Reference On (Note 8) VCC = 3V, Internal Reference Off (Note 8) l l l l 1.7 1.3 1.6 1.2 2.5 2 2.2 1.7 mA mA mA mA ISD Supply Current in Shutdown Mode VCC = 5V (Note 8) l 3μA Digital I/O VIH Digital Input High Voltage VCC = 3.6V to 5.5V VCC = 2.7V to 3.6V l l 2.4 2.0 V V VIL Digital Input Low Voltage VCC = 4.5V to 5.5V VCC = 2.7V to 4.5V l l 0.8 0.6 V V VOH Digital Output High Voltage Load Current = –100μA l VCC – 0.4 V VOL Digital Output Low Voltage Load Current = 100μA l 0.4 V |
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